Frank



P. MYERS.

(No Mddel.)

FORGE.

No. 467,892. Patented Aug. 18, 1891.

Inventor W itnesses mammals "TENS co mon-Minn msmueyon, 04 c.

UNITED STATES PATENT OFFICE.

FRANK. MYERS, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-IIALF TO MATTHEIV G.IVEBER, OF SAME PLACE.

FORGE.

SPECIFICATION forming part'of Letters Patent No. 457,892, dated August18, 1891.

Application filed March 12, 1891.

To all whom it may concern:

Be it known that I, FRANK. ll/IYERS, of Buffalo, in the county of Erieand State of New York, have invented certain new and useful Improvementsin Forges; and I do hereby declare that the following description of mysaid invention, taken in connection with the accompanying sheet ofdrawings, forms a full, clear, and exact specification, which willenable others skilled in the art to which it appertains to make and usethe same.

This invention has general reference to improvements in forges; and itconsists, essentially, in the novel and peculiar combination of partsand details of construction, as hereinafter first fully set forth anddescribed, and then pointed out in the claims.

In the drawings already referred to, which serve to illustrate my saidinvention more fully, Figure l is a longitudinal sectional elevation ofa portable forge provided with my improvements. Figs. 2 and 3 aresectional views of the gas-check detached.

Like parts are designated by corresponding letters of reference in allthe figures.

The object of this invention is the production of a simple and efficientgas-check for portable and other forges and blowers to preventcombustible and explosive gases of the fire from entering the blower,bellows, &c., and from exploding the same by the ignition of said gases.To accomplish these results, I construct this device substantially asfollows:

A is the usual frame or shell of a forge provided with a bellows B orother analogous air compressing 0r blowing device.

O is the air-pipe leading from the source of supply to the tuyere D, Ebeing the handle by which such blower is usually operated.

Into the air-pipe G, I locate a gas-check F, consisting of a T-shapedbody having in its lower branch a valve-plug H and in its upper branch asimilar plug G. In this body I locate a valve J, having a hollow stem Ipassing through the upper plug G a suitable distance, said valve Jseating upon the face hot the plug II. In this tubular valve-stem Ithere is an aperture K, (or several of them, if desired,) so locatedthat when the valve J Serial No. 384,790. (No model.)

is seated this aperture K will be below the lower face gof the plug G,as shown in Fig. 2. It will now be observed that when the valve J is inits normal positioni. 6., seated upon its seat hthe ignitable andexplosive gases from the fire in the heart of the forge will passthrough the pipe C into the body F and through the aperture K in thetubular valvestem I into the outer atmosphere, the tubular valve-stemacting as a chimney and drawing the gases from the body F and the pipe0, while the passage of these gases to the blower is prevented by thevalve J closing the passage to the pipe 0. As soon as air is forcedthrough the pipe 0 the valve J will lift and the aperture K in itstubular stem pass above the lower face of the plug G, as illustrated inFig. 3, thereby closing said aperture K and preventing the escape of airthrough the same and the tubular valve-stem. By locating the gas-checkin the air-pipe the passage of the explosive gases into the blower isprevented, and thereby explosions of these gases and the destruction ofthe blower guarded against, such explosions being of frequentoccurrence, especially in that class of forge-blowers where a reverseaction thereof will cause a current of air to enter the said blowerthrough the air-pipe C.

It is perfectly evident that this invention is applicable to any and allkinds of portable forges, blowers, and similar heating devices withoutchange or modification, and I therefore desire it to be understood thatI do not confine myself to any particular construction of these blowingdevices.

Instead of making the lower plug H a separate piece from the body F andscrewing the former into the latter, I may form the body F with thevalve-seat h in one piece, such construction being a simplification ofthe one described, and within the scope of my invention.

Having thus fully described my invention, I claim as new, and desire tosecure to me by Letters Patent of the United Statesi,

1. In a forge, a gas-check consisting of a valve-body having a yalveprovided with a self-closing vent, as set forth and described.

2. In a forge, a gas-check consisting of a valve-body having a valveprovided with a tubular stem, said stein being provided with an aperturebelow the plug, in the upper branch of said body, whereby said body isvented and the vent automatically closed when the valve is lifted, asdescribed.

In a forge, a gas-check consisting of the T-shaped body, the lower plugin said body having the seat 7L, the upper plug G, and the Valve J,having the tubular stein I, provided with the aperture K below the lowerface g 10 of the plug G, as and for the purpose specified.

In testimony that I claim the foregoing as my invention I have heretoset my hand in the presence of two subscribing Witnesses. FRANK. MYERS.

Attest:

MICHAEL J. STARK, MATTHEW G. WVEBER.

